Mac SVN Server - MAS Code

Slight bugfix to URL field (still not clickable, drat...), we now show the icon in the user list.

Fixed a small typo in one of the messages.

kroc: * now compiles our own ex-pat and includes it with apr-util.
* gettext is now compiled portable

kroc:
* pretty print. The script output is clearer to read and sectioned neatly
* step by step error numbers
* logging to build.log!
* Apache built with our own APR and APR-UTIL

kroc: build script now checks that the XCode project has already been built first before running the script. Also checks that the archives are present before unpacking them. Script stops if any critical errors occur in the build processes. This turned up an error in gettext that wouldn't build. This was fixed by downloading gettext-0.16.1.tar.gz (over 0.15). The ExternalDependencies.zip therefore needs to be updated.
* Things seemed to be half finished. I noticed that the neon, apr, and apr-util archives were not being extracted. I've added the code to extarct these, and fixed the symlinks section to correctly symlink the extracted folders into the subversion folder to get it to build correctly.
* I've made ./configure and make commands quieter so that a lot less is thrown out to screen. This makes it easier to tell at what stage you are at, and makes things more legible. I might extend the script to enable/disable this behaviour with an argument at a later date.

Kroc: Testing to check my commit works.
* Build script now compiles the source code into the default location that XCode builds to, namely: svnmacserver/application/build/release/MAS.app/. No need to copy to /applications/ before running buildmas.sh this way. This paves the way for integrating buildmas.sh into the XCode build targets. Also it is bad practice to place your development builds straight into /applications/ as you may be running a copy of MAS for legitimate reasons, but also working on the MAS source code and do not want the two to conflict. The only time MAS should be copied to /applications/ is when the user downloads a precompiled DMG file and installs themselves.

Added file with instructions on how to build MAS.

Updated directions to mention where we put the files in the SF.net project.

Added lots of missing files and changed to use NSOutlineView for the users/groups list, because we'll need to do that anyway once we fully do groups.

Removed odd temp file that somehow showed up.